From 4138a70a520a22150981f50ee7824857a702cb7d Mon Sep 17 00:00:00 2001
From: artemp <artem@mapnik.org>
Date: Wed, 8 May 2013 16:51:28 +0100
Subject: [PATCH] mapnik::value

to_expression_string - add missing specialization
for mapnik::value_integer and remove usage of std::stringstream
---
 include/mapnik/value.hpp | 17 +++++++----------
 1 file changed, 7 insertions(+), 10 deletions(-)

diff --git a/include/mapnik/value.hpp b/include/mapnik/value.hpp
index fe67c798b..6e9e894fa 100644
--- a/include/mapnik/value.hpp
+++ b/include/mapnik/value.hpp
@@ -40,8 +40,6 @@
 #include "hash_variant.hpp"
 
 // stl
-#include <iostream>
-#include <sstream>
 #include <string>
 #include <cmath>
 
@@ -670,6 +668,13 @@ struct to_expression_string : public boost::static_visitor<std::string>
         return "'" + utf8 + "'";
     }
 
+    std::string operator() (value_integer val) const
+    {
+        std::string output;
+        util::to_string(output,val);
+        return output;
+    }
+
     std::string operator() (value_double val) const
     {
         std::string output;
@@ -687,14 +692,6 @@ struct to_expression_string : public boost::static_visitor<std::string>
         boost::ignore_unused_variable_warning(val);
         return "null";
     }
-
-    template <typename T>
-    std::string operator() (T val) const
-    {
-        std::stringstream ss;
-        ss << val;
-        return ss.str();
-    }
 };
 
 struct to_double : public boost::static_visitor<value_double>